EP3224038B1 - Verfahren und vorrichtung zur korrektur der gebogenen position eines schnitts in einer biege-klebe-presse - Google Patents

Verfahren und vorrichtung zur korrektur der gebogenen position eines schnitts in einer biege-klebe-presse Download PDF

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Publication number
EP3224038B1
EP3224038B1 EP15797862.8A EP15797862A EP3224038B1 EP 3224038 B1 EP3224038 B1 EP 3224038B1 EP 15797862 A EP15797862 A EP 15797862A EP 3224038 B1 EP3224038 B1 EP 3224038B1
Authority
EP
European Patent Office
Prior art keywords
flap
edge
vacuum
suction cups
cut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15797862.8A
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English (en)
French (fr)
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EP3224038A1 (de
Inventor
Sacha Bourgeois
Dimitri Favini
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Bobst Mex SA
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Bobst Mex SA
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Publication date
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Priority to PL15797862T priority Critical patent/PL3224038T3/pl
Publication of EP3224038A1 publication Critical patent/EP3224038A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/003—Straightening the side walls of boxes; Squaring collapsed folded box blanks; Deforming boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/044—Feeding sheets or blanks involving aligning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • B31B50/07—Feeding sheets or blanks by air pressure or suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624—Applying glue on blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B31B2100/002—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed
    • B31B2100/0022—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs characterised by the shape of the blank from which they are formed made from tubular webs or blanks, including by tube or bottom forming operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
    • B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B31B2120/302—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing collapsible into a flat condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/70—Construction of rigid or semi-rigid containers having corrugated or pleated walls

Definitions

  • the present invention relates to the field of the manufacture of packaging, including packaging made from sheets or strips precut, including paper cuts, plastic or cardboard, whether flat, corrugated or mixed.
  • the present invention relates to the machine or the module which makes, from a blank or a cardboard cut already grooved, on the one hand the folding of two lateral flaps that fall back in the direction of a central assembly line, with a partial overlap of the outer edge of these flaps, and secondly the gluing of these two parts in the overlap zone for their subsequent maintenance in the folded position which has been imposed by the machine.
  • Such a machine is called folder-gluer.
  • a cardboard cutout 10 presents flat (see Fig. 1 ) a general shape of rectangle with two sides of greater length, forming the front edge 11 for the side that first enters the folder-gluer machine, and the rear edge 12 for the side that enters the last in the folder-folding machine. gluer.
  • this front edge 11 and this rear edge 12 which are parallel to each other, are generally orthogonal to the longitudinal axis XX 'of the folder-gluer.
  • the two lateral sides of smaller length define the right edge 13 and the left edge 14 which are parallel to each other and to the longitudinal axis XX 'of the folder-gluer.
  • the right edge 13 is the lateral side which is located to the right of the longitudinal axis of the folder-gluer
  • the left edge 14 is the lateral side which is located to the left of the longitudinal axis XX 'of the folder-gluer.
  • the right and left edges 13, 14 have a cut along their two end portions so as to delimit a right leg 13a and a left leg 14a in the central portion of the right and left edges 13 and 14. In some cutouts, the right leg 13a is absent, the edge 13 then being completely straight.
  • Two longitudinal lines represented in dotted lines correspond to the fold lines, materialized by the right longitudinal groove 15 and the left longitudinal groove 16, between which is defined the central flap 19.
  • the right flap 17 is located between the right groove 15 and the edge right 13.
  • the left pane 18 is located between the longitudinal longitudinal groove 16 and the left edge 14.
  • the Figs. 2 and 3 represent the blank 10, after folding and folding of the two flaps 17 and 18 one on the other, and after bonding between the right leg 13a and the left leg 14a, in an ideal conformation.
  • the right tab 14a is sticking directly on the flap 17 at the edge 13.
  • the right side 15 'of the folded-glued cut 10' is obtained at the location of the right longitudinal groove
  • the left side 16 'of the folded-glued cutout 10' is obtained at the location of the longitudinal longitudinal groove 16.
  • the right edge 13 and the left edge 14 are spaced apart from each other, at the cutouts, a gap Greef, forming a reference gap, a predetermined value and constant along the cuts. So on the Fig. 2 , the same value Greef is found at the location of the front edge 11 and the location of the trailing edge 12.
  • a first anomaly of positioning of the two lateral flaps, called gap corresponds to a too large spacing between the right and left edges 14 of the two flaps 17, 18 folded and glued: a representation of this first anomaly is visible on the Fig. 4 , with a gap G 'forming a larger gap than the greek.
  • a second anomaly of positioning of the two lateral flaps 17, 18, called fishtailing corresponds to a defect of parallelism between the edges 13 and 14 of the two lateral flaps 17, 18 folded and glued, most of the time accompanied by the same lack of parallelism between the sides 15 'and 16'.
  • a first configuration of this second anomaly is visible on the Fig. 5 in this case, the edges 13 and 14 converge towards the front edge 11 so that they define a smaller gap G1 (and possibly negative) between the front ends of the edges 13 and 14 that the gap G2 defined between the rear ends of the edges 13 and 14.
  • an angle ⁇ 1 between the edges 13 and 14 is measured from the edge back 12.
  • edges 13 and 14 are divergent in the direction of the front edge 11 and converge towards the rear edge 12, so that they define a gap G1 larger (and possibly negative) between the front ends of the edges 13 and 14 that the gap G2 defines between the rear ends of the edges 13 and 14.
  • an angle a2 between the edges 13 and 14 is measured from the front edge 11.
  • these two anomalies gap and fishtailing can meet simultaneously on the same cardboard cut.
  • the document EP 1932658 describes a method and a folder-gluer machine which uses, at two successive alignment modules, an alignment rule whose orientation with respect to the longitudinal direction of the machine is modifiable, so as to allow, by means of angular offset, which is imposed on one and then the other sides of the folded cut, to make up at least a portion of the misalignment between the two right edges 13 and left 14.
  • this solution rectifies in a systematic way that part of the misalignment that comes from the mechanical movements of the machine and not the shape or the reaction to folding and other processing specific to each cardboard cut.
  • position sensors make it possible to detect these anomalies after treatment of the cut in order to identify and eject the packages concerned by anomalies exceeding a predetermined dimensional tolerance threshold. Also, in the machines of the prior art, the correction of the identified anomaly systematically goes through the modification of the setting of the moving parts of the machine, but does not take into account the deformation of the particular cut from its non-compliant position in the machine, improper folding, improper cutting (contour), or improper grooving.
  • An object of the present invention is to provide a method and a device for processing a cut in a folder-gluer for performing the correction of the position of the right and left flaps when folded one on the other, free limitations of known machines. Another object is to provide a method and a device for correcting the folded position of the right flap and / or the left flap of a cut, taking into account the individual situation of each cut. Another purpose is to correct or not, on a case by case basis, the folded position of the right flap and / or the left flap of a cut, in order to obtain cutouts that are acceptable for most cases. Thus, a maximum of cuts can be preserved for the future treatment and discard only a small number of cuts. In this way, material savings are realized since only few cuts are thus ejected from the machine to be discarded.
  • suction cups with partial vacuum, allows to grasp and rectify the position of the folded right door and / or the folded left door, and without damage.
  • Such a method can be implemented while the position of the cut, in the longitudinal direction of the folder-gluer, is substantially the same throughout the correction procedure.
  • the method is implemented while cutting advances in the longitudinal direction of the folder-gluer, either continuously or by jerks.
  • the locking of the central flap during the step f1) is performed by its lower face by locking means operating with a depression vacuum vacuum of the lower face. In this way, maintaining the central flap that does not damage the cut is achieved and it is easy to activate or stop it quickly.
  • Such a device makes it possible to fold the top of both the right flap and the left flap, over the central flap, folding the folded right flap and folded left flap which are found one above the other at least in the overlap portion, the installation of the glue, the control of the position of the right and left flaps, the possible realization of the correction of the position of the right flap, the left flap or both of the flap right and left pane, and maintaining the corrected position during the support between the right flap and the left flap in the covering portion until the glue.
  • the order of operations mentioned above is not fixed, the glue can be installed before or after folding, before or after the position check, or before or after the possible correction.
  • the present invention also relates to a folder-gluer machine equipped with a correction device as described in the present text.
  • the Fig. 7 illustrates the principle of the method for correcting an excessively large gap, namely with G '- Glef> 0.
  • a positional deviation is detected, namely the distance between the right edge and the left edge or gap, which is not in accordance with FIG. the admissible range, as for gap G 'of the Fig. 4 or from Fig. 7 .
  • the following procedure is performed. After blocking the central flap 19, the gripping of the upper face of the folded right flap 17 is simultaneously performed by two suckers 21, 23 offset in the longitudinal direction and the gripping of the upper face of the left flap 18 folded by two suckers 24, 26 offset in the longitudinal direction.
  • the four suction cups 21, 23, 24 and 26 are lowered to come into contact with the folded right flap face 17 facing upwards and with the face of the folded left flap 18 facing upwards.
  • the four suckers 21, 23, 24 and 26 being vacuumed during the capture, a safe grip of the right pane 17 is obtained in two locations and the left pane 18 in two locations.
  • the correction of the position of the left pane 18 and / or the right pane 16 is achieved by lateral displacement of the two suckers 21, 23 of the right pane 16 and / or the two suckers 24, 26 of the left pane 18, in order to change the distance between the right edge 13 and the left edge 14 to bring it back into the allowable range.
  • the two straight suckers 21 and 23, including the right front suction cup 21 and the right rear suction cup 23, are moved together. So, on the Fig. 7 to bring the right edge 13 of the axis X-X ', the pair of straight suckers 21, 23 is moved to the left.
  • the two left suction cups 24 and 26, comprising the left front suction cup 24 and the left rear suction cup 26, are moved together. So, on the Fig. 7 to bring the left edge 14 of the axis X-X ', the pair of left suction cups 24, 26 is moved to the left.
  • the Figs. 8 and 9 respectively illustrate the principle of the correction method for rear fishtailing or front fishtailing.
  • a positional deviation is detected in the form of a parallelism defect between the right edge 13 and the left edge 14, with a angle value ⁇ 1 or ⁇ 2 exceeding a maximum allowable value, it is in the presence of a result of folding not in accordance with the allowable range, and as for the Figs. 5, and 6 the following procedure is carried out.
  • the four suction cups 21, 23, 24 and 26 are lowered in right and left pairs, until coming into contact with the folded right flap face 17 facing upwards and with the face of the folded left flap 18 turned to the top.
  • the front suction cup 21 and 21 of each pair is placed under vacuum.
  • the rear fishtailing is corrected by a lateral displacement of the front suction cups 21 and 24 towards the outer lateral sides of the bent cut, which are located on the same flap as the suction cup. So, as we see on the Fig. 8 , the right front suction cup 21 is moved towards the right side 15 ', namely to the right, and the left front suction cup 24 is moved towards the left side 16', namely to the left.
  • the front fishtailing is corrected by a lateral displacement of the front suction cups 21 and 24 towards the outer lateral sides of the folded cutout 10 which are located on the flap different from that on which the suction cup is concerned. So, as we see on the Fig. 9 , the right front suction cup 21 is moved towards the left side 16 ', ie to the left, and the left front suction cup 24 is moved towards the right side 15', namely to the right.
  • the angular position of the left flap 18 and / or the right flap 16 is corrected using, for the right pane 16 and for the left pane 18, a single sucker that is vacuumed to perform the seizure of the corresponding flap, and which remains under vacuum during its lateral movement, thereby changing the orientation of the right pane 17 and / or the left pane 18 to bring the right edge 13 and the left edge 14 substantially parallel to each other.
  • This maneuver for modifying the angular position of the right flap 17 or the left flap 18 or both of the right flap 17 and the left flap 18 also functions by partial evacuation and lateral displacement of one or the other.
  • the invention also makes it possible to act and rectify the two anomalies.
  • the correction of the gap is effected by lateral displacement of the two suckers of each pair, right and left, the four suckers 21, 23, 24 and 26 being in engagement with the right and left flaps 17, according to the previous explanations of the Fig. 7 .
  • the correction means comprise a pair of straight suction cups 21, 23 and a pair of left suction cups 24, 26 (see FIG. Figs. 10 to 13 for the upper part of the correction device).
  • a first suction cup 21 (24) is located at the front and a second suction pad 23 (26) is located at the rear. Moreover, the vacuuming of the first suction cup 21 (24) is controlled independently of the evacuation of the second suction cup 23 (26).
  • the two suction cups 21, 23 of the pair of straight suction cups are mounted on a straight support 31 for simultaneously moving the two suction cups 21, 23 and the two suction cups 24, 26 of the pair of suction cups. on the left support 32 for simultaneously moving the two suction cups 24, 26.
  • the simultaneous displacement of the two suction cups of each pair is carried out in a transverse direction (orthogonally to the direction of advancement A) and height.
  • the right support 31 (left 32) is mounted by a right bracket 33 ( left 34) to the rod 35 (36) of a straight linear motor 37 (left 38).
  • a first position corresponds to the rest position, pending the arrival of a new cut.
  • a second position corresponds to the end position when the blank has been folded, glued and possibly corrected.
  • the compression module 40 supplies partial vacuum air to the right suction cups 21, 23 via a straight pipe 41 and feeds the left suction cups 24, 26 with partial vacuum through a left pipe 42 (FIG. Figs. 10 and 11 ).
  • optical detection means To control the position of the right edge 13 and the left 14 after the folding of the right flap 17 and the left flap 18, it is preferably used optical detection means, not shown. For example, optical detection as described in the document is used. EP 0937573 .
  • These detection means measure the difference between the right edge 13 and the left edge 14 after the folding of the right flap 17 and the left flap 18 at several locations along the longitudinal direction. In this way, by comparison means, the comparison of each of these measured values with the reference gap, of predetermined value Ge, is carried out and it is determined whether a correction is necessary. In this case, it is calculated which retrofit must be made to return the cut to the acceptable range of deviation.
  • the right support 31 and the left support 32 have a longitudinal stroke (along the axis XX 'of the folder-gluer) of 200 mm thanks to the linear motors 37 and 38.
  • This longitudinal stroke makes it possible to follow the cutting 10 during a part of its advance while performing the correction during the advancing along the advancement direction A.
  • the right support 31 and the left support 32 has a transverse travel (according to the direction orthogonal to the XX 'axis of the folder-gluer) between 10mm and 30mm. This transverse stroke is sufficient to make up for the anomalies encountered in most cases for a cut of maximum size, for example 1100mm by 1700mm.
  • Pressure means for making a pressure contact between the right flap 17 and the left flap 18 in the covering portion.
  • the lower part of the correction device completes the elements allowing the advance of the cut in the longitudinal direction by locking means of the central flap 19 (see Figs. 11A , 11B , 13 , 14 , 15 , 16A , 16B , 17A and 17B ).
  • the elements allowing the advance of the blank 10 are endless belts 60, visible in number of three on the Figs. 16A , 16B , 17A and 17B and arranged parallel to each other under the suction cups 21, 23, 24 and 26.
  • These locking means are intended to retain the cutout 10 by its central flap 19 by preventing it from lifting, or to move laterally in particular. Without this restraint of cutting by its central flap 19, the correction of the position of the right pane 17 and / or the left pane 18 could not be effected with efficiency and precision.
  • an embodiment of these blocking means 70 of the central flap 19 uses, as a gripping means of the central flap 19, a depression vacuum vacuum of the underside of the central flap 19.
  • the blocking means 70 comprise at least one ramp 71 equipped with nozzles 72 oriented upwards and able to perform a vacuum.
  • the outlet of these nozzles 72 opens on a support plate 75 on which the cutout 10 rests while being able to be driven by the belts 60.
  • two ramps 71 are each arranged along the one and the Other external belts 60.
  • the nozzles 72 act as suction cups by sucking down the underside of the central flap 19 when they are supplied with air under partial vacuum.
  • a pressurization module 73 supplies partial ramp air 71 to the ramps 71 via the pipes 74.
  • the ramp 71 is mounted ( Figs. 13 to 17 ) on a linear motor 80 accompanying the cut 10 during its travel along the longitudinal direction of the folder-gluer machine.
  • the vacuum of the ramps 71 is activated, whereby each nozzle 72 realizes a grip a surface of the lower face of the central flap 19, thus making it possible to perform the correction of the right flap 17 and / or the left flap 18.
  • the linear motor 80 is placed along the transport means that advance the cut along the longitudinal direction of the folder-gluer.
  • these transport means are endless belts 60.
  • three endless belts 60 are arranged over the width of the module of the folder-gluer, and along and outside the two outer belts, is mounted a ramp 71
  • between each pair of belts 60 is mounted a ramp 71. In this way, the cuts 10 are driven by the belts 60 and are pressed downwards when the evacuation of the ramps 71 is activated.
  • the linear motors 80 accompany the longitudinal stroke of the blank 10 in all cases, whether there is correction or not. Also, the linear motors 80 are retracted and returned to the initial position rapidly after the departure of the blank 10 from the correction device and before the arrival of the next blank 10 in the correction device.
  • the correction means ie the suction cups 21, 23, 24, 26, and the blocking means, ie the ramps 71
  • the correction means are able to advance in the longitudinal direction (X-X ') of the folder-gluer machine to the same speed as the cut 10 during its longitudinal stroke.
  • a synchronization between the motor which controls the longitudinal travel of the right support 31 and the left support 32 and the motor which controls the linear motors 80 supporting the suction nozzles 71 is carried out.
  • the bonding is carried out before the folding of the right flap 17 and the left flap 18.
  • it is essential to avoid taking the glue in the overlap portion between the right flap 17 and the left flap 18 before and during the control of the position (ie during steps d), e)), and during the eventual position correction (step f)).
  • it prevents the contact between the right flap and the left flap by an element 90 inserted between the right flap 17 and the left flap 18, and before step g) the element 90 is removed and a pressure contact is made between the adhesive, the right flap 17 and the left flap 18 in the covering portion, preferably until the glue.
  • the correction device preferably further comprises an element 90 adapted to be inserted between the right flap and the left flap before folding, and able to be removed after the correction.
  • this element 90 can be in the form of a rod fixed by its rear end from the top and allowing the passage of the cut just below the element 90. This is of an embodiment where the folding and the correction of the cut are carried out during the advance of the cutout 10.
  • the more advanced position of the cutout 10 allows a release of the rod which is then output from the cut, whereby the contact between the right flap 17, the left flap 18 and the central flap 19 is provided to allow the taking of the glue.
  • this element 90 can be removed.
  • the correction of the position of the right flap 18 and the left flap 17 relative to the central flap 19, is done in a sufficiently short time to allow this correction before taking the glue.
  • a folder-gluer may also be a folding-gluing unit, mounted for example in an in-line machine, downstream of a flexo printing, and a rotary cut.

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Claims (15)

  1. Verfahren zum Bearbeiten eines Zuschnitts (10), der dazu bestimmt ist, nach dem Falz- und Klebevorgang, eine abgeflachte Faltschachtel zu bilden, die folgenden Schritte umfassend:
    a) Bereitstellen eines im Wesentlichen ebenen Zuschnitts (10), der eine rechte Kante (13), eine linke Kante (14), eine vordere Kante (11), eine hintere Kante (12), eine rechte Längsnut (15) und eine linke Längsnut (16) umfasst, wobei die rechte Längsnut (15) und die linke Längsnut (16) zusammen mit der rechten Kante (13) und der linken Kante (14) mindestens drei Klappen abgrenzen, darunter eine rechte Klappe (17), eine linke Klappe (18) und eine mittlere Klappe (19),
    b) Auftragen von Klebstoff auf einen Bereich der rechten Klappe (17) neben der rechten Kante (13) und/oder auf einen Bereich der linken Klappe (18) neben der linken Kante (14), sodass Klebstoff in einem Überlappungsabschnitt zwischen der rechten Klappe (17) und der linken Klappe (18) vorhanden ist,
    c) Falten der rechten Klappe (17) um 180° um die rechte Längsnut (15) zur mittleren Klappe (19) und Falten der linken Klappe (18) um 180° um die linke Längsnut (16) zur mittleren Klappe (19),
    d) Schließen der gefalteten rechten Klappe (17) und der gefalteten linken Klappe (18), die mindestens im Überlappungsabschnitt übereinanderliegen;
    e) Prüfen der Position der rechten Kante (13) und der linken Kante (14) und Vergleichen dieser Istposition mit einer vorbestimmten Position, um eine Positionsabweichung festzustellen;
    f) wenn die Positionsabweichung einen zulässigen Abweichungswert überschreitet, Ausführen der folgenden Teilschritte, bevor der Klebstoff abbindet:
    f1) Blockierung der mittleren Klappe (19), dann
    f2) Greifen der Oberseite der gefalteten rechten Klappe (17) und der gefalteten linken Klappe (18) durch jeweils mindestens einen mit Unterdruck beaufschlagten Sauggreifer (21, 23, 24, 26), und
    f3) Korrektur der Position der linken Klappe (18) und/oder der rechten Klappe (17) durch Bewegen des mit Unterdruck beaufschlagten Sauggreifers (21, 23, 24, 26),
    g) Druckbeaufschlagung im Überlappungsabschnitt zwischen rechter und linker Klappe bis zur Aushärtung des Klebstoffs; und
    h) Lösen der mittleren Klappe (19), der rechten Klappe (17) und der linken Klappe (18).
  2. Verfahren nach Anspruch 1, bei dem, wenn die festgestellte Positionsabweichung ein Abstand zwischen der rechten Kante und der linken Kante ist, der nicht dem zulässigen Bereich entspricht, Schritt f2) für die rechte Klappe und für die linke Klappe (18) mit zwei in Längsrichtung versetzten und beim Greifen mit Unterdruck beaufschlagten Sauggreifern (21, 23, 24, 26) durchgeführt wird, und Schritt f3) mit einer seitlichen Verschiebung der beiden Sauggreifer (21, 23, 24, 26) der rechten Klappe (17) und/oder der linken Klappe (18) durchgeführt wird, um den Abstand zwischen der rechten Kante (13) und der linken Kante (14) zu verändern, um ihn wieder in den zulässigen Bereich zu bringen.
  3. Verfahren nach Anspruch 1, bei dem, wenn die festgestellte Positionsabweichung ein Parallelitätsfehler zwischen der rechten Kante und der linken Kante ist, Schritt f2) für die rechte Klappe und für die linke Klappe (18) mit einem einzigen während des Greifens mit Unterdruck beaufschlagten Sauggreifer (21, 23, 24, 26) durchgeführt wird, und Schritt f3) mit einer seitlichen Verschiebung des Sauggreifers (21, 23, 24, 26) der rechten und/oder linken Klappe (18) durchgeführt wird, um die Ausrichtung der rechten und/oder linken Klappe (18) zu verändern und die rechte Kante (13) und die linke Kante (14) im Wesentlichen wieder parallel zueinander auszurichten.
  4. Verfahren nach einem der vorstehenden Ansprüche, bei dem die Blockierung der mittleren Klappe in Schritt f1) an ihrer Unterseite mittels Blockiermitteln erfolgt, die mit Unterdruckbeaufschlagung der Unterseite arbeiten.
  5. Vorrichtung zum Korrigieren der Falzposition eines Zuschnitts (10) in einer Falz- und Klebemaschine für einen im Wesentlichen ebenen Zuschnitt (10), der eine rechte Kante, eine linke Kante, eine vordere Kante, eine hintere Kante, eine rechte Längsnut (15) und eine linke Längsnut (16) umfasst, wobei die rechte Längsnut (15) und die linke Längsnut (16) zusammen mit der rechten Kante und der linken Kante mindestens drei Klappen abgrenzen, darunter eine rechte Klappe (17), eine linke Klappe (18) und eine mittlere Klappe (19), wobei die Vorrichtung Folgendes umfasst:
    - Mittel zum Falten der rechten Klappe (17) und der linken Klappe (18),
    - Mittel zum Prüfen der relativen Position der rechten und der linken Kante in Querrichtung nach dem Falten der rechten Klappe (17) und der linken Klappe (18),
    - Mittel zum Blockieren (71) der mittleren Klappe (19),
    - Mittel zum Verkleben, die imstande sind, den Klebstoff auf einen Bereich der rechten Klappe (17) neben der rechten Kante (13) und/oder einen Bereich der linken Klappe (18) neben der linken Kante (14) aufzutragen, sodass Klebstoff in einem Überlappungsabschnitt zwischen den rechten Klappe (17) und der linken Klappe (18) vorhanden ist;
    - Mittel zum Korrigieren der Position der linken Klappe und/oder der rechten Klappe, mindestens einen Sauggreifer (21, 23, 24, 26) zum Greifen der rechten Klappe und mindestens einen Sauggreifer (21, 23, 24, 26) zum Greifen der linken Klappe umfassend, wobei die Sauggreifer (21, 23, 24, 26) nach unten gerichtet, vertikal und in Querrichtung beweglich und imstande sind, mit Unterdruck beaufschlagt zu werden.
  6. Vorrichtung nach Anspruch 5, bei der die Mittel zum Korrigieren ein Paar rechte Sauggreifer (21, 23) und ein Paar linke Sauggreifer (24, 26) umfassen.
  7. Vorrichtung nach Anspruch 5, wobei für jedes Sauggreiferpaar (21, 23; 24, 26) ein erster Sauggreifer vorne und ein zweiter Sauggreifer hinten angeordnet ist und wobei die Unterdruckbeaufschlagung des ersten Sauggreifers unabhängig von der Unterdruckbeaufschlagung des zweiten Sauggreifers gesteuert wird.
  8. Vorrichtung nach Anspruch 6 oder 7, bei der die beiden Sauggreifer (21, 23) des rechten Sauggreiferpaares auf einem rechten Träger (31) montiert sind, der das gleichzeitige Bewegen der beiden Sauggreifer ermöglicht, und die beiden Sauggreifer (24, 26) des linken Sauggreiferpaares auf einem linken Träger (32) montiert sind, der das gleichzeitige Bewegen der beiden Sauggreifer ermöglicht.
  9. Vorrichtung nach einem der Ansprüche 5 bis 8, die weiter ein Element (90) umfasst, das imstande ist, zwischen die rechte Klappe (17) und die linke Klappe (18) vor deren Falten eingesetzt und nach der Korrektur herausgezogen zu werden.
  10. Vorrichtung nach einem der Ansprüche 5 bis 9, bei der die Prüfmittel eine optische Erfassung umfassen.
  11. Vorrichtung nach einem der Ansprüche 5 bis 10, bei der die Mittel zum Blockieren imstande sind, eine Unterdruckbeaufschlagung der Unterseite der mittleren Klappe des Zuschnitts (10) zu erzeugen.
  12. Vorrichtung nach Anspruch 11, bei der die Mittel zum Blockieren mindestens eine Rampe (71) umfassen, die mit nach oben gerichteten Düsen (72) ausgestattet ist und imstande ist, einen Unterdruck zu erzeugen.
  13. Vorrichtung nach Anspruch 12, bei der die Rampe (71) auf einem Linearmotor (80) montiert ist, der den Zuschnitt (10) bei seinem Lauf begleitet, und wobei im Falle einer Korrektur der Unterdruck aktiviert wird.
  14. Vorrichtung nach einem der Ansprüche 5 bis 13, bei der die Mittel zum Korrigieren und die Mittel zum Blockieren darüber hinaus imstande sind, sich in Längsrichtung mit der gleichen Geschwindigkeit zu bewegen, wie der Zuschnitt (10) bei seinem Lauf in Längsrichtung.
  15. Falz- und Klebemaschine, die mit einer Vorrichtung zum Korrigieren nach einem der Ansprüche 5 bis 14 ausgestattet ist.
EP15797862.8A 2014-11-24 2015-11-10 Verfahren und vorrichtung zur korrektur der gebogenen position eines schnitts in einer biege-klebe-presse Active EP3224038B1 (de)

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US20180339479A1 (en) 2018-11-29
US11285684B2 (en) 2022-03-29
JP2017538608A (ja) 2017-12-28
TW201636269A (zh) 2016-10-16
PL3224038T3 (pl) 2018-09-28
TR201809938T4 (tr) 2018-08-27
TWI566984B (zh) 2017-01-21
EP3224038A1 (de) 2017-10-04
ES2679793T3 (es) 2018-08-31
JP6397140B2 (ja) 2018-09-26
CN107206723A (zh) 2017-09-26
KR20170087929A (ko) 2017-07-31
KR101887838B1 (ko) 2018-09-10

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